Vehicle Backup Power Control for Critical Functions After Battery Cutoff
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Solution Overview
Problem
When the power supply from a single vehicle battery is interrupted, it becomes impossible to start the engine or operate various electrical components, particularly in emergency situations, posing difficulties for passengers.
Innovation Solution
A vehicle system that includes a main battery, an auxiliary battery, and an image recording controller to supply auxiliary power to critical electrical components when the main power is interrupted, ensuring continuous operation of essential systems like image recording, collision detection, and emergency functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single main battery is used to supply power to all electrical components, then the device complexity is reduced, but the reliability of essential operations during power interruption deteriorates
Solution Approach 1:
The power supply system is segmented into a main battery for normal operation and an auxiliary battery for emergency situations. The auxiliary battery is specifically dedicated to powering critical components (image recording controller, collision sensor, airbag controller, electric seat, communicator) when the main power fails, ensuring reliability without requiring a complete redesign of the entire power system.
Solution Approach 2:
The auxiliary battery, originally intended solely for image recording apparatus operation, is designed to serve multiple functions: it powers the image recording controller, collision sensor, airbag controller, electric seat, and communicator during emergencies. This multi-functionality allows a single additional component to provide comprehensive backup power for all critical systems.
2Reliability
If an auxiliary battery is added to provide backup power for critical components, then the reliability during power interruption is improved, but the device complexity increases
Solution Approach 1:
The auxiliary battery is designed as a multi-functional backup power source that can serve multiple critical systems simultaneously. Rather than adding separate backup batteries for each component, a single auxiliary battery provides power to the image recording controller, collision sensor, airbag controller, electric seat, and communicator, thereby limiting the increase in device complexity while maximizing reliability improvement.
Solution Approach 2:
The auxiliary battery is pre-configured and connected to the power supply network before any power interruption occurs. The system includes pre-established power supply paths from the auxiliary battery to critical components, allowing immediate takeover of power supply without requiring complex real-time decision-making or reconfiguration during emergencies.
3Adaptability or versatility
If the auxiliary battery is used to power multiple electrical components during emergency, then the adaptability of the power system is improved, but the loss of energy from the auxiliary battery increases
Solution Approach 1:
The power supply system implements local quality by providing auxiliary power selectively to specific critical components rather than all electrical components. The image recording controller, collision sensor, airbag controller, electric seat, and communicator are identified as critical and are prioritized for auxiliary power supply, while non-critical components are not powered from the auxiliary battery, thereby reducing overall energy consumption.
Solution Approach 2:
The system applies partial action by providing backup power to only the essential components needed for safety and basic functionality during emergencies. Rather than attempting to power all vehicle systems from the auxiliary battery, the system focuses on partial power supply to critical components, accepting that some non-essential functions will not operate during power interruptions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the vehicle to maintain essential operations and safety measures, such as seat adjustment and emergency calls, even when the main power is cut off, enhancing passenger safety during emergencies.
Implementation Method 1
an auxiliary battery configured to supply an auxiliary power
Data Source
AI summary
When a main power from a main battery of a vehicle is interrupted (or cut off), an auxiliary power supplied from an auxiliary battery may be used to drive electrical components of the vehicle. The vehicle includes: a main battery to supply the main power; the auxiliary battery to supply an auxiliary power; and an image recording controller to operate with the main power, capture and record an image of surroundings of the vehicle. In particular, when the supply of the main power is interrupted, the image recording controller performs capturing and recording the image by receiving the auxiliary power, controls a supply path of the auxiliary power so that the auxiliary power is supplied to a predetermined electrical component of the vehicle to continuously operate the predetermined electrical component using the auxiliary power.